Secure Control of Nonlinear Systems Using Semi-Homomorphic Encryption

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    Author
    Lin, Y; Farokhi, F; Shames, I; Nesic, D
    Date
    2018-01-01
    Source Title
    Proceedings of the ... IEEE Conference on Decision & Control / IEEE Control Systems Society. IEEE Conference on Decision & Control
    Publisher
    IEEE
    University of Melbourne Author/s
    Nesic, Dragan; Shames, Iman; Farokhi, Farhad; Lin, Yankai
    Affiliation
    Electrical and Electronic Engineering
    Metadata
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    Document Type
    Conference Paper
    Citations
    Lin, Y., Farokhi, F., Shames, I. & Nesic, D. (2018). Secure Control of Nonlinear Systems Using Semi-Homomorphic Encryption. Proceedings of the 57th IEEE Conference on Decision and Control (CDC), 2018-December, pp.5002-5007. IEEE. https://doi.org/10.1109/CDC.2018.8619569.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/251858
    DOI
    10.1109/CDC.2018.8619569
    ARC Grant code
    ARC/DP170104099
    Abstract
    A secure nonlinear networked control system (NCS) design using semi-homomorphic encryption, namely, Paillier encryption is studied. Under certain assumptions, control signal computation using encrypted signal directly is allowed by semi-homomorphic encryption. Thus, the security of the NCSs is further enhanced by concealing information on the controller side. However, additional technical difficulties in the design and analysis of NCSs are induced compared to standard NCSs. In this paper, the stabilization of a nonlinear discrete time NCS is considered. More specifically, sufficient conditions on the encryption parameters that guarantee stability of the NCS are provided, and a trade-off between the encryption parameters and the ultimate bound of the state is shown.

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